Saab Key Programming
Saab cars that were built prior to 1994 have an immobilizer system made up of coded keys. In order to add a second key, it requires an entirely new transponder and programming. This is usually done by the dealer using a special Tech2 diagnostic tool.
The issue is that this can be extremely expensive. Always keep an extra set of keys at hand.
Transponder key
The transponder key is a key equipped with an electronic chip. It transmits a signal to the car when it is inserted into the ignition. The car then analyzes the signal to see whether it matches that of the key. If the signals match, the car will unlock and start. This is a great method to stop auto theft and keep your vehicle safe from thieves.
Transponder keys are an extremely popular accessory for cars, but they are not as secure as traditional metal keys. While the metal part of a traditional key can be cut and copied however, a transponder is secured by an electronic chip. The chip has an unique code that is embedded into the car's computer to identify it.
When a Saab key fob is used the car recognizes it and allows it to turn on. However, it can only do this if your key fob is unmodified and has a chip that has been programmed to match. In the absence of that, the car will reject the key and not start.
It is essential to ensure that you have an extra key for your Saab. This is especially important when you live in a rural area, where there are many car thieves. The good thing is that you can obtain a replacement key for your Saab without having to go to a dealership and pay the hefty prices that they demand. You can get an original key made on the spot for less than half the cost you would pay at a dealership.
Key for Wired
Saab cars are usually provided with two keys. If you only have one, it's recommended to purchase an additional key fob as soon as possible since if you lose it, the car will require the replacement of a CIM unit and the locking cylinders have to be replaced. This can be costly especially if you're buying a second-hand car.
The next step is connecting the wires for columns and row to your microcontroller. This is the toughest part of the project and will require a lot of soldering. There's no standard way to do it, but you need to think about how to connect and solder each column and row. There are 22 microcontroller wires as well as pins to connect for this keyboard. It includes 5 rows and 17 columns.
After the columns and rows are soldered together after which it is time to connect the key switches. To do this, you need to place a diode on each key switch pin and then solder it. This will shield the pins from current, thus preventing them from being cut off. A diode permits current to only flow in one direction. It comes with a visual indicator, a black band, that indicates which direction current will flow.
Sanabria says that a few of the tools that are sold in auto parts stores, like the Autel MaxiIM IMM608PRO and IM508 will assist shoppers or DIY users to program replacement keys and restore the immobilizer's data. The tools connect to OBD ports and guide the customer through each step which makes the process much easier than replacing the car's computer.
Jumpstarting how to program saab 9-3 key fob The Key Lab of people have an assortment of tools in their trunk to jump start a car in an emergency, but it may not be the best idea for newer cars. They have numerous digital and electronic devices that communicate with each other. A voltage spike when batteries are connected to another battery could damage the components and render your vehicle unusable.
Start the vehicle you are using and allow it to run for around two minutes before connecting the cables to the battery that is not working. Attach the red clip to the positive terminal on the good battery (it will have "POS" or "+" on it). Attach the other end of the black cable to a clean, unpainted metal surface underneath the car's hood. The engine block is a good choice. Don't connect the black cable to the negative terminal of the dead battery, since it could spark a spark that ignites the gasoline in the engine bay.
Once the cables are connected, you should start the car and let it run for about five minutes. Then disconnect them in reverse. The battery in the Saab 9-3 will charge as you drive. It takes a while for it to fall back. It's a good idea to buy a spare key fob as soon as you can, since replacing the one that works requires the installation of a new computer module and special programming to convince it that your missing keys aren't trying to steal the car.
Replacement Case
Saab owners often only have one car key, and if it is lost, they will be charged. The reason for this is that it's costly to add a new key, and it involves replacing the CIM (Column Integration Module) or TWICE on older models, as well as programming. In the event of theft, or any other catastrophe it is advisable to have an extra key. Even it's "new" it will not work.
Most locksmiths aren't able to help in the event that you only have one working key and the dealer will charge for the cost of replacing the computer in your vehicle for a replacement. We can reset and reprogram the computer's EEEPROM in order to be able to accept a replacement key without replacing the entire system. This could save you a significant amount of money. It's much cheaper instead of waiting until you lose your only key.